pi-r8 - SP and workshops doesn't have to hurt your tech pace. You just need a cottaged capital with Oxford, settle your GS's and be in rep for the extra beakers on every specialist. My last SP game I had 700+ beakers from the capital which got me a close number 2 in tech and the more cities I took the faster my tech pace increased 
EDIT - if you don't have pyramids, use the lib to get nationalism and take the Taj golden age to make your switch to caste. During the golden age run serfdom to help your workers farm/workshop over all your cottages. Grab constitution for rep which will really boost tech on the way to State Property.

EDIT - if you don't have pyramids, use the lib to get nationalism and take the Taj golden age to make your switch to caste. During the golden age run serfdom to help your workers farm/workshop over all your cottages. Grab constitution for rep which will really boost tech on the way to State Property.

, but I finished it. Well, I ended up getting the Artist from Music, plus building the Taj and using 2 more Great Peeps for 3 total Golden Ages. That was 1.5 x 3 = 4.5 Golden Ages (36 (consecutive!) turns) for the price of 3 Golden Ages (24 turns). Though the eventual outcome wasn't much in doubt by the time I launched the Golden Age-slingshot (see ya, AIs), I did make use of them, too, winning with I think 3 Golden Age turns left. If I remember the finishing turn right, that would mean I spent over 17% of the total number of game turns in Golden Age! (Yes, this game went well
, with a great random leader and start). The multiple free civic and religion changes were really nice. In some past games I've been a little
at how much of my Golden Age(s) I didn't get to use because victory came too quickly! Prob'ly part of why I'm thinking of moving up another difficulty level...