Welcome aboard Steve and Nancy!
My wife and I have a Present 42 Sundeck (Chung Hwa yard) and clearly they are the same hull and very similar in layout. I am a huge fan of a sundeck design. Lots of "areas" for entertaining, or just to put some space between you and the SO. We have twin 135 Lehmans (no turbo). We seem to use about 4.5 gallons an hour, at hull speed. These boats will never plane- even with the bigger HP.
The only negatives are all the steps to transverse, ant a lot of "sail area/ windage". Good luck.
1983 Present 42 Sundeck
Twin Lehman 135's
Steve Point Cadet/ Biloxi, Mississippi USA
*Present 42 twin 135 Lehmans