1976 spectre 23 considering purchase

[Gmoney28]

Thanks to all who have replied to date , I spoke with my electronics guy and he confirmed he can switch my c80 set up off the 72 Grady make it my main , tie in the radar and relocate A60 as back up . The raw water intake gauge shows me the volume of water based on the pressure at the intake I assume ? Is vac gauge in place to monitor compression on the engine ?
After my discussion with electronics tech it appears I can set up both navigation systems , compass in lighted binnacle , radar , two radios , CD player and marine radio , I know all of this will be on a new 3rd battery set up , I am not sure how much rewiring I will do as it is currently immaculate , but every thing functions off 2 batteries in the motor box . Tech really wants the batteries on the motors only with little else , is a 3rd battery enough , I intend to keep a well charged jump box in the cuddly.
Looked at a valise style life raft , 4 man for around 1200.00 coastal rated . Pray I don't need it .
Epirb, well stocked first aid kit , one in boat , one in ditch bag , hand held in ditch bag , emergency food ditch bag and boat , water, flares in both , hand help GPS , I won a Etrex 10 at the CCA banquet , will that unit pick up off shore ? Rope , knife , sunscreen , pistol , mirror,
Nylon rain gear , frog togs, any suggestions in light weight functional rain gear , don't want to try and muscle a bag with my grundens in it .
What have I left out ? All responses are greatly appreciated and considered .