You could go with the T8 mounted inside. I'd use a reflective fixture to direct the UVB down over the basking area. A T8 should be mounted about 6-8'' above the basking area for best results.
Alternatively, if you decided to go with a MVB you could put it on an adjustable lamp stand and keep it raised above the lid of the tank so you won't have to move it to open the tank. Their optimal distance depends on the bulb and measured temps but is usually in the 12-18'' range.