Here are two suggestions - you can find both used:
- Epiphone ES-339: A small body 335 style but width of a Les Paul. Easily find one used for $400 and under.
http://www.epiphone.com/Products/Arc...S-339-PRO.aspx
For more $$
- Taylor T5z: A hybrid Electric and Acoustic. This is the small body version of the T5 - also the size of a Les Paul. They have a number different models.
https://www.taylorguitars.com/guitars/electric/t5z