Congrats on your new (old) purchase, HiggyBaby! As time goes on, I know you will be able to make it just like you want!
And, 20 yo ovens work fine… until they don’t. Many ovens of the “early 90’s era” have “LED readout panels.” Most have undoubtedly “gone bad” by now (flickering portions of numbers and letters), causing their owners to have to use portable thermometers inside the oven. This fix works … for about 3 years. Eventually, they will only cook at 500 degrees, burning everything! Then it’s time to replace them. (The panel replacement costs abt $350 – more than the oven is worth). 95% of the *newer* 27″ (dbl) and 30″ (single) wall ovens are now “convection” and are built with a large fan in the back, making the installation trickier and not suitable for all applications.
As you may surmise, I myself have traveled this road – more than once… :=0
If your oven is a 30″ single, it can now be replaced with a convection wall oven at =<50% of retail price, costing $1000 - $1200, if purchased out-of-box (as clearance or display sample). The best times to shop for these are New Years Eve (Sears Sherman St Outlet - look for newspaper coupon) and Dec-Jan (Lowes display removals). Other retail outlets may also be clearing this year's models out at this time.
I'm thankful today for my health, my home and my family. Happy Thanksgiving to all Piggs and "happy cooking" or safe traveling if that's what you're doing!