The barlow is easy. However, the inexpensive eyepieces, Plossl's and UO orthos, will have very tight eye relief. Which can be uncomfortable to use. The alternative is to spend some money on wide field high eyerelief eyepieces. This is the route I chose.
Comfort is everything when using a telescope.
The Vixen Lanthenum eyepieces. 20mm eyerelief and AFOV from 50 degrees to 45 degrees depending on the focal length. The best bet is to try before you buy. or make sure you buy from someone with a good return policy if you don't like the EP's. The eyerelief issue is a real concern if you must wear glasses. If you don't need glases then it is a comfort issue.