>Is sticking 6k a year in a traditional roth IRA and converting to Roth and 94k in a taxable account vs putting all 100k into a taxable account going to make a big difference come retirement?

For the minimal amount of effort involved? Absolutely.

>Reason I am hesistant is I dont want to screw up and forget to file the correct forms for taxes

Its pretty much idiot proof. If you can earn $300-400k/year, you can successfully file your taxes

> Also, i thought there was some legislation that would prevent this in the future.

That's a problem for the future