Newbie alert...I have been looking for gear and have come across a down camping quilt (queen size) with 575 fill duck down for $89.95 (Canadian).

Comforter is 32 oz and measures 79" x 79"

Questions are:

What modifications would you guys suggest to make it a practical underquilt?

What temperature rating do you think it would have? (doubled up?)

Is it a good price or are there better buys in underquilts?

Any suggestions welcome.