Sealing prior to wash/filter coat. Attack of the thinner! Advice appreciated...
Hey All,
I'm wrapping up painting a bust I sculpted and have some questions about sealing one's model prior to applying your thinned wash.
My bust is just about done but I would like to enter into my next project a bit better prepared. 
I sealed it with Golden Varnish (acrylic suspended in mineral spirits) and washed it with oil paints thinned with drying linseed oil. I'm happy with the results (my 1st time with oils), but it appears it's going to take days to dry.
What I would have rather done is use mineral spirits or a turpenoid as my thinner as they naturally dry much faster than the linseed oil.
However, I have had bad luck with removing washes with solvents as they eat into my gloss coat. Yet in the meanwhile I read of people having no problem with this technique.
What sealing/gloss coats can I apply that won't get eaten by my wash solvent?
**On a side note; once my current piece is dry, what's a good means to seal over my oil paint/linseed coat? I gather the Golden acrylic spray doesn't adhere to oils well.**
Thanks!!