1. Remove cassette (keep for if you hate SS)
2. Fit cheap SS spacers and cog.
3. Fit cheap tensioner (or do something wierd with your rear mech to do the same job).
4. Remove 2 chainrings.
5. Shorten chain to fit.
6. Try it - if you like it, spend a fortune on expensive Ti cog, SS chainset, tensioner etc. If you hate it, reverse the process and Ebay your SS bits.
Easy Peasy