Welcome to the forum Target Finder...
first, I know some lefty's that have shot r/h bows lefty so it can be done. But...the cast risers on those old bows are not real comfortable in the wrong hand and if your grip is not consistant it will effect you shooting and raise your frustration level...
You may be better off trying to find another r/h bow and dump the lefty on ebay or in the classified here....jmo
as for accessories carbon express terminators are inexpensive. Try to stay away from used ebay arrows, you can't be sure what condition they're in and sometimes they are shorter than they say because they measured the overall length including point...
most ly you will just have to search around for stuff you like. This time of year Dick's Sportinggoods and other large stores have big clearance sales on sights and rests and even arrows to make room for new stuff coming next year
all I can say is don't get overwhelmed and discouraged, this is a great sport and can be alot of fun if you let it.
Good luck and keep posting,
Ed