i'd get a consultation done by your said engineer first off more than anything and get him to sign off on the consultation thus advising of everything he wants done for the car for registration then you have a peice of paper that says it will be engineered to these certifications from that date and if rules and regulations change you can still finish it...

It's very ambitious of you to want to get it done by march next year, if you are no mechanic and only doing work on it after hours..

Have you got everything for the swap as of yet??

You need to modify or change the crossmember, the tunnel, gearbox cross member, have the tailshaft shortened, depending on the diff you are using that shortened as well, different brakes and suspension all round, steering setup, exhaust and mounting, different gauges, hydraulic clutch and the list goes on and on.. alot of these thing's you want new cause no engineer is going to pass it unless it meets the requirements

Other costs, welder, gas for the welder specialty tools unless you can borrow this off a friend

Have you priced up what you want to do cause not being very mechanically minded along with fabrication and electrical this swap if buying parts from maddat is easily going to set you back $10-$15k

Hell this swap alone for me in my spare time would take me 6-8 months plus unless you know what your doing with the electrical and researching and understanding the engine most people get stuck just on electrical

thats the hard realization you need to take into your mind if you go ahead with it