No...personally I'm a forged pistol person but as a first time entry level build, the cast option is considerably less money and will allow you to hone your skill and for all intent and purpose should work just fine. Once you feel confident, get the hard core parts and build away. If money is no object, hell have at it..you can also look at the prefit slide to frame option but you would deprive yourself of an opportunity...

But I wish you luck, I do the same kinda stuff, jump in and try to build a rifle or pistol, I've had pretty good luck with it but without the proper tools, it's like taking a block of steel and a hand file and building a rifle...it can be done but it takes comittment...It's our way. Keep us posted.