I flew an RV4 with chute for 10 years, Para-Phernalia (Softie shell and harness) with 28' military canopy. It was a full sized backpack, bigger than a Micro or Mini. It worked well with seat back pad removed. Pilot weight is not a consideration for light pilot. The Softie Mini is 240 lbs max and Micro 180 or 240 lb max. Fitting in the airplane is important. Either one will work well in any RV. The Wedge Softie is also an option based on preference. I like the wedge as it gives more lower back support.
A safety chute is not a comfort accessory, but it's not bad, just not as comfortable as your padded upholstery. One option is padding or liner on chute to make it more comfy.
http://softieparachutes.com/parachutemodels/
Softie makes good stuff for pilot emergency chutes. I owned one. The prices are insane now. I paid under $400 for a slight used one 20 years ago.
Shop around. Other brands are also good (MarS ATL–15, Strong 311). Airshow season brings up some sales usually, but you can't go wrong with Softie. If buying new you have choice of shell color, trim color, web color, hardware, width (smaller width taller shell). The Wedge Softie works as well. Some options add to cost. I bought mine +20 yrs ago for about $400 used. Now they are 6 times that.
GET SOME GROUND instruction from someone who understands how to utilize them. There is a lot to think about and drill on the ground to make it "muscle memory". Also criteria on when to bail is critical. Practice or dry runs (with out actually pulling D-ring) is really important. Do NOT wait to pull D-ring with (BOTH HANDS). Also don't leave it in the plane. Take it out and get an old hard sided suite case to store it in. Store Chute in environmentally controlled storage (your house not hanger).