Sorry if this has been asked before, did a search but didn't really find much information.

So I bought my first road bike a few weeks ago, and probably have logged about 100 miles so far. I can only ride weekends, and just built up to a 33miler on my last ride, quite an improvement from the usual 14 miler. Is it too soon to go back to the LBS for the fitting? Should I give it more seat time? I already moved back my seat by a cm, and it felt alot better for my hands. And I definitely feel as though I could use more reach. (5'9 riding a 54cm trek 2.1) Tempted to flip my stem to see how it will feel, but would rather just wait for fitting. Also, I do want to change from SPD pedals to the 105's, and I'm thinking it would be wise to get accustomed to the new pedals since that will also be a part of the fitting right?

Thoughts? Thanks So far I'm loving the ride, and just wished I didn't travel for a living so I could ride on weekdays as well.