I started with Ross Rounds my first year.  Lots of other people I know did the same.  That extractor is a big investment when you're still deciding how much you like this new hobby.

I think the advice you got might have more to do with the bees' tendency to not draw out new comb if they have the option to refill last year's extracted frames instead.  Remember that extracting only knocks the tops off the comb - the wax and the work invested in the sidewalls remains intact.  It's a lot easier to refill than to make new.  So the usual rule is that you put your comb supers on your strongest hives so they have the most time to draw out the new wax.  (The corollary is that you shouldn't bother putting both an extracting super and a comb super on the same colony - they'll fill up the extracting super and won't even start on the comb super until they have to.)

Regardless, this won't be an issue your first year.  You'll be starting with raw foundation whether it's in the Ross Rounds or in extractable frames.  The bees will have to draw out new comb in both cases.  Don't expect much your first year, though.  Your bees are going to be busy building out their home.  That will take priority over starting on supers.  I got a partial super my first year and counted myself extremely lucky.  Many people don't get their first real harvest until the second year.