5k to spend on motor

[FivepointOH]

I was actually trying to save for gt40p heads and a cobra intake with ecam until I found out I was getting a 5k check in jan. Oh and supposedly my longtubes would work with p heads. A lentech would be nice but my motor has 120k on it and has seen better days and I don't know how long it would hold up with the added power of h/c/i combo. I was thinking of a dss pro bullet 306(want to run 11's eventually and supposedly they can support that kind of power) for 2k. Haven't decided on what kind of h/i/c to run on it though. Leaning towards AFR or TFS, edelbrock intake and not sure on the intake. How hard would it be for me to put together this motor? I've installed struts/shocks, radiator, pulleys, alternator. I have a friend that's very mechanically inclined that's done carbed motors before but never efi and he says he's scared too because of all the wires and stuff...... Thanks for all the help/suggestions guys keep it coming...