Yes, the standard advice given to everyone who is embarking on converting a boat, or designing a rig for a new boat, is to get hold of a copy of the invaluable reference book "Practical Junk Rig", where the whole question of placement of the rig is well covered.

The reason for the forward rake is to get the sail area in the right place for helm balance, but keeping the mast bury in a convenient place. A side benefit is that the sail tends to remain more stably outboard when running. The luff may be parallel to the mast, or not, depending on the sail design - the fantail sail is better with more balance area at the foot, other sails don't need it, and often have more balance area at the head. However, you wouldn't want to put more balance area at the head with a forward-raked mast. We don't see forward rake on western junk rigs because of the conservatism of many sailors, used as they are to the upright bermudan mast and the aft rake of some traditional western rigs, such as the American style of schooner.

It can be done, but it's always difficult to fit a two masted rig onto a heavy, short-ended boat, so I think you will need to fit just one, very large, sail. Look for references to Sebastian Hentschel's Peregrine as an example of such a big rig. Since the builders are in Canada, I suggest that you look at Ewing Flagpoles's 12" tapered alloy pole, as a possible starting point for a mast. It looks as though you will have to rake the mast forwards, if it is to go in the same location through the deck, which seems reasonable.