Cocaine/Ecstasy estimate my chances

[jord4n007]

Preliminary Info:
SWIM is 180lbs 5"10 about average weight not heavily muscular.
SWIM is prescribed Adderall
SWIM uses ecstasy rarely, probably once a month.
SWIM uses cocaine rarely, probably every other week SWIM buys a gram for the night.

Question:
SWIM is getting a new job and was not expecting to be hired until the end of the week. Monday SWIM took two ecstasy pills (unknown chemicals but SWIM says they felt like MDMA/slightly speedy) and SWIM also used 0.5g Cocaine. SWIM dropped one pill at about 3pm and snorted the other at about 3:45pm. SWIM began snorting the cocaine during the comedown and finished the bag at about 10am Tuesday morning along with SWIMs normal dose of Adderall.

Well Tuesday afternoon, SWIM gets a call for his final interview. "SWIM was busy that day" and the interview was done Wed at 1. Tuesday SWIM began to flush SWIMs system drinking alot of water, double dosed SWIMs adderall, took AZOs, drank cranerry juice, took ephedrine pills, began a vitamin B routine, began eating red meat for meals, and began an aspirin routine. SWIM has been pissing non-stop since Tuesday night. SWIM was hired at SWIMs interview but has to take a 5 panel drug test within 48hours which gives SWIM until Friday morning.

If SWIM continues his flushing regimen, what are his chances of testing negative for cocaine and/or MDMA and/or Meth(if there was any in the ecstasy)? Also, is red meat enough to boost creatine metabolite concentrations or should SWIM buy some creatine supplements or a flush drink with the creatine in it? Finally, if SWIM brings in his prescription and shows the test site SWIM is prescribed adderall, when SWIMs urine shows positive for Amphetamines, is the lab likely to do a confirmation screening which would show possible MDMA or Meth pressence or would they just skip they just skip the amphetamine positive based on SWIMs amphetamine prescription?

Thanks for your help, please recommend any further precautions SWIM could take along with your estimate on my chances if you have any.

Also, SWIM has read extensively on this topic, but SWIM is confused on the reports of using baking soda/tums to increase pH of urine, is that recommended as an extra safety against meth/mdma?