Stonewall's a really good perk for a H2H and melee character, Jury rig is really only of great use to guns and PA, and they dont need it tbh.
All other weapon sets are nerfed with the form lists of like items, meaning you often need as good / expensive a weapon as the one you wish to repair.
If you're taking splash damage often go for hit the deck, as it fits your role imo, and fast melee hunter killers are very common in NV.
Since your repair is high enough already and you're planning on only using a select few weapons just use repair kits and merchant repairs, with Raul as a companion if you like imo.
Thats the thing though this char is H2h AND explosives as a back up (scripted him after a warhammer 40k Space Marine) meaning he only uses explosvies in situations where I NEED to...like a swarm of Casadors or 3 Deathclaws anytime something gets close enough or is not a big threat I just ballistic fist it lol...so its more melee oriented then explosives..if Im inside for the most part I just Ballistic Fist its head in. I do use PA as well..hes brotherood and a heavy melee character. I finally took jurry rigging for the PA and Ballistic Fist (repairing it with knuckles rocks). So at level 26 I have 2 perks left for this character its going to be from these five, stonewall, splash damage, hit the deck, Super Slam (I may not take this as there is very FEW things that survive even TWO hits from my Ballistic Fist..Paralyzing Palm even seems like a waste atm...maybe there are big bosses that it will come in handy with) and Nerd Rage
PS may main skills are (the build is power house late game with a ballistic fist and Grenade MG)
Unarmed (100)
Explosives(100)
Medicine(100)
Repair(100)
Science(100)
45 Melee (incase I take Super Slam)
and some lockpick (extra points)