Well, because of the aforementioned problems with the sound post, bass bar and tuning pegs, I strongly suspect you will not be pleased with the sound. Also, on 'good' to 'decent' violins, the inside of the belly and top are carved differently for lefties. BUT, I have seen and heard lefties using a right handed fiddle with just the strings reversed that sounded good and won contests. So, do what you will.

IMO, since your left hand is dominant and the left hand does a LOT of the work on a fiddle, you should be able to play quite well in standard position.

My (now deceased)friend Stuart Mossman made only 2 left handed guitars in his entire career, and said he would never make another one. Too much work to think backwards.

IF you decide to have one custom made, PM me...I may have some contacts for you.