1ml EA is 0.9g, so you have 350 x 0.9 = 315g EA
You have used 5g of citric acid, so you are currently at 5/315 = 0.016 g citric/g EA, so 16mg citric acid/g EA.
Have you reviewed this, from the tek:
Q: After adding citric acid, I saw clouds but didn't get crystals to precipitate, what gives?
A: First make sure the TEK instructions were followed, in particular: well mixed paste, short pull times, clean extract free of debris (including water droplets), citric acid is in range, etc. Before adding citric acid, allow the extract to rest. Issues that are suspected to cause goo are water droplets 1 or debris in the extract. To help ensure these are not an issue, allow the extract to rest for even more time in the fridge (24+ hours) before salting. If excess water is an issue, drops will form on the jar walls and/or bottom that need to be decanted carefully. If no goo is present and instead nothing is precipitating, bring up the citric acid concentration up to 20mg/g or more (stay below 40mg/g due to solubility concerns) and wait a few days. Check the jar walls, a transparent product may have precipitated there (e.g. this has been reported for whole bridgessi[17]). If all else fails, pulling the extract with water, evaporating, and washing with fresh ethyl acetate should leave behind a potent residue (dose will be less accurate and can be made proportional to starting cactus amount).