98Mugen_Civic

i am getting a 98 civic EX red and fully loaded 5 speed.......down fall is that it has a D15B . i want to put a B18B, or a B18C/R, or an H22A. not sure yet on which one though. but i was thinking for of a B18C. with a few mods to it. i know the transmission for the D15B is not that good with mods. i also know that a B series engine is easy to install in the car. i also know that the H series isn't too easy to put in as the B series. so my thought on the whole thing is to get a B series engine in it. and i want to know how long of a engine swap am i in for because i am going to be building the engine outside of then car then put it in once it is finished. also do i have to get the gauge cluster for the engine going to be installed. i know i need the jumper and an ECU for the swap too.