Level 56. If I recall, I'm at 100 in Smithing, Enchanting and Sneak, and I'm close in Light Armor, One-Handed, and Archery. I followed a very balanced playstyle, rarely rushed or forced or bypassed anything, and relied only rarely (perhaps 5x) on paid training.

Even following best known practices (picking up as many arrows and dropping as little as possible, turning off autosaves, etc.), my save files are still hovering at 15mb, and laggage requires reboot hourly, and it freezes every other hour or so.