Quick video to show that this run is possible with minimal gear, the main issue with lack of gear will mainly be killing the Sorcerers and the abbot's at the end of kill phase.
This run was done on Wow Classic SOD Phase 2.
Best xp for SOD Phase 3 : up to 200k xp/hour
Talents are 0/0/31

TimeCode
00:00 00:11 Gear
00:11 02:54 Killing Sorcerers
2:54 5:48 Pet Pull
5:48 6:11 Pulling rest my self
6:11 10:54 Kill phase