Congratulations on your R-29 investment. Welcome aboard... 🙂
1) If you are contemplating now or in the future to anchor out for one or more days the LED option for all the light fixtures would be very beneficial. Mind you, you can make this change yourself later and quite likely for less brass.
2) As Bruce Moore as indicated, the Garmin GPSMAP 7215 would be a good option -- much faster processor and faster screen rendering especially if you're using the BlueChart G2 Vision cards that provide the very useful Auto Guidance feature IMO. The Garmin 5212 that most of us have since recent years after Ranger switched to Garmin from Raymarine for their stock navigation is now out of production, so I'm told. Once all of the stocked units vendors are holding have been sold there will no longer be a supply of 5212s from Garmin to be had. I also believe the 7215 has a larger screen than on the 5212 -- 15.5" vs. 12.1".
3) Definitely go for the Propane combo stove/oven -- especially if you will be anchoring now or in future.
4) Again, if anchoring then think about adding two extra house batteries if you opt for a single solar panel. More than one solar panel will limit the storage space on cabin top, plus it's not always sunny and the 130 watt solar panel(s) lay flat and not at their optimal angle to generate max charging wattage for the batteries. One solar panel could very well not be sufficient to keep up with your electric use over a few days... two should be sufficient though (lights - add up all the lights wattage and you will be surprised, refrigerator having a 4amp draw, computer drawing 100 watts, TV, radio, water maker, freezer, wind cooler, etc all consume a lot of electric energy)... thus the extra house batteries would be very beneficial. You do not want to drain the batteries below 50% or they will be 'toast'.
5) A bit spendy, but a full cockpit enclosure might be something to consider... mind you, it can be a bit awkward having the full enclosure erected all the time. If you opt for this, then also consider adding bug screening as well.
6) Another option/alternative to #5 would be to have a pull down screen installed inside of the cabin door. I've seen this type screen on an R-25 in my area that was purchased from the East coast where there are bugs the size of dive bombers. :lol:
7) AIS is useful but is very expensive... Think carefully about this option 😉
8) If you love music then have Ranger look into providing a USB connector for the radio/stereo so that you can simply use a USB thumb drive loaded with all your favorite playlists. Today, Ranger does not provide this option... but a little prodding in this direction would certainly be appreciated by me. 😀
9) Some people (especially east coasters) have had Ranger rotate the hatch above the helm so that it opens forward to allow air to be rammed into the cabin for better ventilation on warm days. The stock position for all hatches (except for the bow one) is for them to open sideways. I believe the hatches are square so one could do this yourself easily by unscrewing the hatch, rotating it and then screwing it down in the position you desire.
10) I've heard nothing but good news about the use of the Webasto diesel heater... if you plan on cruising in cooler weather, or simply enjoying the boat at anchor or at the dock when temps are low this heater would be most welcomed.
11) Ask Ranger about the inclusion of a table that attaches to the cockpits transom locker via a nice shiny steel tube... I've seen this installed on an R-27 and it does look awesome and of course can be stowed when not needed.
12) Consider adding a Xantrex Link Lite battery monitor. Using another Tugnuts wording -- "It is esssentially a fuel guage for your batteries so you know the state of charge. Without that, there is no way you can reasonably guess the state of charge of your batteries. Monitoring just the battery voltage is a waste of time. The only time the value you read is meaniful is when the batteries have been sitting for many hours with no drain or charge on them."
13) Maybe consider a water-maker as well.
Good luck. 🙂