Congratulations on that cute puppy!
When I was a grad student, I trained my papillon to use puppy pads because my schedule was erratic. Big mistake! Later on when I wanted him to go outside, he was impossible to re-train. Luckily he was a little dog so he couldn't make a huge mess, but I will never, ever, ever, use puppy pads again. If I were you, I'd find a way to crate train your puppy. Can someone come home at lunch to let the pup out and play with him? Most don't have to be in crates forever, it's temporary until they have earned the privilege to be free. Once the puppy's a little older and starts to get the idea he's supposed to go outside, I have found that you can block them into a bathroom or small laundry room without accidents until someone is home to supervise. If your puppy has a favorite spot to pee in the house, I'd clean it really well with an enzymatic cleaner, and block it off, block off the room if I had to, so he can't go there.