Pete7 has hit about the right price. However, not wishing to be negative, it sounds like you need all the help you can get, collectively the sum of all the parts is worth less when sold together (IMHO of course).
If it were me, I'd stick her on www.boatsandoutboards.com
where it's free to advertise. I'd stick her in at say, £4950 ono to end up accepting £4750/$4250 if you're lucky.
The obstacle you face is the lack pf PTT on such large engines. If they were PTT you could add another £500 to Pete7's reckoning.
Anyway, get a picture up on here for us to look at, if she's a stunner it could tip the balance i your favour.