Make sure you get a good set of Bi-Metal holesaws as well. Patience is free. And Ive made some pretty trick parts with a jig saw, a small Dewalt grinder (which I still have) some hand files and long cold winter months. Ive used the arc welder trick. Its messy and your layout on that sheet of 3/8ths is tight in some places, maybe too tight for an O/A torch, but you can work it down. Note that you dont have to hack that stuff out in one pass either. You definitely need some cutting oil, regardless of what youre cutting with. Id break that sheet down into smaller chunks and whittle em out with the arc welder, and trim em down with the jig-saw and OIL this time and dress them with a grinder and a hand file. Buy some good carbide blades in a fairly fine tooth. cut out one piece, start on your second, stop in the middle, grind on your first piece to let the jigsaw cool down and wash rinse repeat. Once you get the shape close, you can nibble it down pretty easy; one step at a time.
Maybe one of your cannuck buddies out there could rough out the more complicated parts for some beer and let you work it down at your leisure.
PS Central Tractor (Farm and Family Supply) here in the states has the Hobart Handler 140 MIG on sale. This is the same as a Miller and its a wonderful welder for the price. You need a welder of some sort, Id recommend this one (dont get a wire feed welder you cant add shielding gas to. Theyre too light duty and the welds arent "great"), and see if you can find an old arc welder. Also, theres got to be a gas welding set in your paper fairly reasonably priced. Anyone out there got an old set of torches and regulators theyre not using??
Keep picking away at it...you'll get it. This part of the build is where your sense of pride and appreciation comes from.
Word to the wise; I havent started my T yet, and theres not a man alive who has the right to criticize you for not fabbing your own brackets. Thats like saying since my dad has a 5axis machine at work, why dont I whittle my own pistons or connecting rods out. Sometimes you just have to draw the line somewhere, no one here would think less of you for buying GOOD QUALITY brackets.
Id look at those welders series brackets if you cant get to cutting your own, or having RPM sneak them across the line