Did you mix the CSM+B into the same water as the Macros? I hope not. You can mix Macros together (so KNO3, KH2PO4, and K2SO4), but Micros must be mixed separate, and should be dose on opposite days. It's hard to tell from your post, because you say you put them in separate containers, but then said you had 1 cup. That aside, assuming you didn't mix them up, for your size tank:
EI dosing says 1/8 tsp of KNO3 3x per week (I do MWF). Your 2 tsp mix means you have a total of 16 doses. If you have a 1/4 c of that liquid, that means you have 12 tsp of liquid. To spread that into 16 doses, you'd be looking at 3/4 tsp (or 3.75 mL) per dose for KNO3, 3x per week.
EI dosing says 1/32 tsp of KH2PO4 3x per week (I do MWF). Your 2 tsp mix means you have a total of 64 doses. If you have a 1/4 c of that liquid, that means you have 12 tsp of liquid. To spread that into 64 doses, you'd be looking at between 1/5 and 1/6 tsp per dose for KH2PO4, 3x per week. That won't work well, because they don't make spoons that size. 1/4 c is also 59 mL, which is pretty close to 64, so for the purposes of making it easy, I'd probably say just do 1mL per dose, 3x per week. EI doesn't require that much precision, where such a tiny difference matters.
See KH2PO4 above. It's the same 1/32 tsp 3x per week dose (I do MWF).
See KH2PO4 above. It's the same 1/32 tsp 3x per week dose, on opposite days of the Macros (I do TTS).
That sounds like a giant pain in the ass to me. First off, you can mix all of the Macros together, but only if they are in the correct ratios together. You can't mix what you have exactly as it is, because you'd either under-dose KNO3, or over-dose the others.
To make your mixes easier to use, I'd get the ratios of the Macros in line so you can mix them together. That means you need 4x as much KNO3, or 1/4 as much KH2PO4 and K2SO4. It's up to you if you want to make a bigger batch (add 2 Tbsp of KNO3), or a smaller batch (dump out 3/4 of each KH2PO4 and K2SO4). Either will work (for 16 total doses or 64 total doses), but 64 doses is a lot and might mold before you use it all (that's 21 weeks worth). Definitely keep it in the fridge.
Once you get your ratios in line, come up with how much liquid you want to dose each time to make it easy for you to measure and store. When I was hand dosing liquid ferts, I used a handy 10 mL syringe
to keep from spilling. If you want 10 mL doses, and you make your batch into 64 total doses, you'd need to make the liquid volume 640 mL. If you want 10 mL doses and made your batch into 16 doses, you'd only need 160 mL.
For your micros, you have 64 total doses already, so just decide on dose size and set your volume accordingly (dose size x 64 = volume).
Also, you can use some Excel to fill some of the volume to inhibit algae growth.
Does that all make sense?