Ok, so for your first question - yes, I think you can use it if you do conditioner only. I would probably do that first mixed with a little condish, then add more condish over. Simply because I would be scrunching in the condish, and might scrunch out too much extra moisture.

We are talking just a few drops on very wet hair, so I don't think it should give you the same issues you had before with MO.

As with anything new, maybe try it when you have a free day, in case there are any issues and you have to start over! Hopefully it will work for you!!
2c/3a/3b, Fine/med, Dense, high porous, & normal elas.

Lo-poo - Renpure Keratin, SMR, Giovanni SaS
clarifying - mix Johnson's H2T with low poo
Co-wash - Suave Nats. clar. or coco.
RO - GVPCB, Ion Eff. Care, TN.
LI - SMR, Cure Care, or RO
Seal - MO or Jojoba
DT - + honey, ACV, & EVOO to SM masque & GVPCB
PT - Gelatin!, CNPF
Styling - FSG, AIF, BRHG, LALS/PS, GF curl spray gel, SM Souffle/Smoothie, LOOB
Oils - MO!, EVOO, jojoba, GSO, SM Elixer, EVCO, VO5 Hairdressing