Thanks for posting! I'm having a little trouble seeing what your current hole spacing is. It looks like it might be around 5-7/8", but I could be wrong. Could you confirm?
Also, do you still have your original handle on hand? There's no reason to drill new holes if we can find a handle set that will work with your door as it is now. If you can upload a few pictures of your original handle, we can see if we can find a closer match. Let me know!
I do not have the original door handle anymore, however, the original hole spacing is 5 7/8". I drilled the middle one for a different door handle that did not have a lock on it and I added a seperate lock. Those dimensions are 4 7/8" between the top two holes and then the bottom two are 1". Selling the house and the buyer wants a handle put on with the lock.