>>2842537 (OP)
You can do it for a lot less if you don't use a guide. Unfortunately for you the Napel government legally mandated you must use a guide, and no sherpa is going to slave away for you for 2 months for minimum pay. You can probably convince one to take you to base camp though for under $1000, no need to acclimatize for that unless your body can't even cope with 10k alt. Only takes like a week too.
In fact most of the "2 months" is really just wasted acclimatizing people and training them by taking training runs up to camps 1, 2 and 3 repeatedly and you only get to go to camp 4 + summit if your guide thinks you have a good weather window.