It may be worth looking for a second hand Myford. If you can find one at a reasonable price in the adverts and can get the seriel number a phone call to Myfords will tell you how old it is and if they still stock the parts for it.
The beauty of Myfords is that as the manufacturer is UK based spares are easily available. Also there is a large range of tooling available for them and as the lathe is not as large as many of the industrial machines the tooling and chucks are often cheaper to buy. It is possible that if you buy a second hand industrial machine cheaper than the Myford you will end up spending more than the difference on the tooling to equip the lathe so overall you will not end up saving anything.
The other thing to consider is the space you have available as many of the old industrial machines are quite large and when put in a garage or small workshop leave little space to work.
Turning to milling, this is easily carried out on the Myford. You have two options,
a) you buy the bolt on milling attachemnt for the lathe made by Myford or I believe one or two other manufacturers have made some in the past.
b) you buy the verticle slide that bolts onto the cross slide
I’ve owned a Myford for nearly 20 years now and in that time have used a Harrisom and a Colchester. Of the three I prefer the Myford for Model Engineering.
Hope this gives you a useful pointer.