Nice work getting the core in!
Ok about your new plan if i remember correctly you are using epoxy resin?
This whole opinion is based off that.
I’m NOT even close to a expert so take this with a grain of salt.
With epoxy there is no need to use 1708. You can just use 17oz biaxl. The 1708 soaks up to much resin and does not increase strength of the glass. The reason for this is 1708 is just 17oz biaxl stitched with 1.5 oz mat. The mat does almost zero for strength, but it does waterproof the core plus add thickness.
The 1708 will also not make the curve on the top of the stringer.
What I have picked up is this layer up with epoxy.
All wet on wet for chemical bond
1. Clean everything with a chemical solution.
2. Glue the stringer down PL or peanut butter. Add fillets
3. 1.5 oz mat to waterproof the make the curve on top
4. 6 inch 17 oz biaxl tape
5. 10 inch 17 oz biaxl tape
6. 12 to 16 inch 17oz biaxl tape enough to reach the top of the stringer and 4 to 6 inches overlap of the last tape on the hull side,
7. If fairing 1.5 mat over the area.
This is both sides of the stringer.
Someone Else will confirm if I’m right and or close!
Don’t just take my word for it!!!
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1986 V20 Cuddy in pieces 
"WILD FINN"
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