theQman23, don't worry. My first 1911 match gun project was done on a Norinco 1911 at the recommendations from several seasoned regional USPSA match shooters using Wilson Combat components.
With about $1000 spent on the pistol total (including mercury/ball bearing filled Haart recoil guide rod) and several days with a diamond file set with my Bullseye shooting/reloading mentor, it shot comparable or better than pistols that were priced much more (I did some side-by-side comparisons with other match 1911s on practice days and got "two thumbs up" from other 1911 match shooters - one even asked if I would do another for him
). Best part was I did all the work (trigger job, hand fitting, etc.) and it was "custom tailored" for me like trigger pull/break point. After I had verifying tight shot groups, it didn't matter what name was on the slide. For me accuracy is everything and holes on target speak volumes.
When I switched match caliber/pistol, another shooter bought it after shooting it. He paid more than what I spent on the pistol and he had a grin ear-to-ear at the tight shot groups he kept producing.
This is your thing - You get to do whatever you want to do.
But if you want to treat this new hobby as a business, you should get to know your target customer base and what they want regarding base pistol, components, level of custom work done and pricing.
There are some who will buy nothing but Colts and will pay well to have some nice work done on them. There are some who just want a "custom" anything that's different than what you can get at LGS counter. There are some like me who only cares about accuracy (I have a railed Sig 1911 and endorse RIA Tactical for that reason).
Maybe you can do a polled thread and see what the general consensus is as to what buyers want and how much they are willing to spend on a custom 1911.
Perhaps you can have a lower priced "entry level custom" model based on this
$350 1911 to build your customer base? And have tiered custom models based on different 1911 manufacturers?