10/27/2008 at 09:00 AM EDT
Reality TV stars Trista and Ryan Sutter, who announced last week that they're pregnant for a second time, tell PEOPLE that they're due in April – and in talks to star in a new reality show.
"We're open to whatever," Trista told PEOPLE while visiting SeaWorld Orlando on Friday with Ryan and 15-month-old son Max. "It's just a matter of whether it fits."
Trista tells PEOPLE that the show would involve Max and the new baby.
"There are pros and cons," she says. "Having cameras in your face is an obstacle, because we've tried to be very private. But if we want to pay our mortgage and pay off our debt, well, we'll do it if it's within our lifestyle," she says.
Trista, who gave birth to Max four weeks prematurely
because of complications late in her pregnancy, says that the new baby will be her last. She plans to have a tubal ligation.
"I know people think it's drastic when they hear that," she says. "But I have such rough pregnancies. I would have been as happy as a clam in salt water with just Max. So this is just the icing on the cake."
She says she and Ryan will remain open to the idea of adoption if they decide to have a bigger family.
Trista is still battling nausea but is giving into her cravings for Snickers bars, Ruffles and French onion dip. She lost her baby weight quickly after having Max, but it took a lot of sweat – hitting the gym with a trainer plus taking supplements – to get back to her pre-baby shape.
"I worked really hard," Trista says. "You have to. But I did it within the realm of what my doctor said was okay. The trainer helped tremendously. It just makes you accountable."
2003: Trista & Ryan's reality TV romance is the real deal RELATED GALLERY:
2003: Go inside Trista & Ryan's wedding!