My folks bought a duplex/storefront property in a Milw suburb after my sister & I graduated H.S. (but still lived @ home). It was from the 1920's, back when the shopkeeper would live behind the store in the lower unit & rent the upper. It had a lot of potential, but the process to reveal it was arduous, to say the least.
My dad tore down the drywall to reinsulate the walls... there was the original horsehair paper, & that was it! My sister & I would be woken up on the weekends by my dad knocking the lathe/plaster walls with a sledgehammer & have to remove all the debris. The windows were also original, with the plumb weights, which he had replaced with Pella crankouts.
There were tray ceilings & crown moulding that was taken down & restored. The hardwood floors were covered in asbestos tile laid over tarpaper - not your typical restoration project there.
The back porch had been added on later, & was not livable - we started working on it in the fall, & an early winter storm took down the walls! We spent the winter with thick layers of plastic floor to ceiling blocking the doorway to the porch (which was also the way to the main door), like they have in a walkin freezer.
Now, when it was done, the place was gorgeous. Nicer than anything newly built. But it was a 3-year process, & we did almost all the work ourselves - my dad has a lot of knowledge & skill. But I'll tell you, we were not prepared for the "finds" - the tile/tar paper could not just be scraped up like we thought, it was hours & hours with a hot air blower to melt & scrape & then later sand the tar that was adhered to the wood.
No idea that the walls weren't typical drywall - that was a mess & a half! And who on earth expects to have a wall knocked out by a storm!?
So, if you & your husband want to do it, have a professional come in while you are living there currently. Someone who specializes in OLD HOME restoration. You may not use his services for everything, but you need to know what you would possibly be dealing with if you go forward with plans. What type of walls do you have, do plumbing & electrical need to be updated, or fully rewired? What are things about older houses that require different approaches? What are the things you truly can't do yourselves (or shouldn't if you want nice results)?
Get an estimate for how much it will cost to do the necessary things - plumbing, wiring, insulation, window updates, etc. Find out what he would charge, & how much of that is labor, & how much is supplies. You can use that information when making an offer on the house as incentive to lowball on the price. You may also come to the realization that this just isn't for you.
Also make sure that you & hubs are the type that can keep up with renovations. It's one thing to say "oh wouldn't it be awesome if...", it's another to spend EVERY weekend working on the house, & all week long living with the current state of disarray in between.
Best of luck either way! T.