I've had the X-E1 since it was introduced. Still have it. Am finding no need to move to the newer models. These go relatively cheap these days on the used market. I'd suggest getting your feet wet with one of the discontinued Fuji X cameras as way cheaper that way. As far as lenses, the kit zoom lens gets you most of what you need. In 35mm full frame terms, a 35mm lens would be a 23mm prime for the Fuji. A 135mm in full frame would be a 90mm prime for the Fuji. FWIW I preferred the electronic viewfinder on the X-E1 to the Pro and why I chose that over the Pro -- getting critical focus with the electronic viewfinder is much easier than with the optical finder IME with the manual lenses. I also prefer the Fuji's controls and layout as more traditional and intuitive like 35mm film SLRs and Rangefinders.
The Fuji-X lenses I use are the 18mm f/2 and the 35mm f/1.4. The 35 f/1.4 is an absolute gem and is equivalent to a 52mm on a conventional 35mm full frame. The 18mm is very good, but has a little more orthoscopic distortions than I like. The Fuji 23mm would probably be a better choice for a bit wider without so much off-axis distortions. Actually, the 23mm Fuji could probably replace both my Fuji primes and be the best alternative. If I had to do it all over again I would either get just the 23 f/1.4 Fuji prime, or the kit Zoom, then all the rest of the lenses would be the manual Nikons (or Canons or Minoltas or Olympus, which ever you prefer on the used market).
For other focal lengths, I decided to use manual focus primes. So very inexpensive to pick up great performing Nikon AI-s primes for $50-$150 each on Ebay that I have filled the rest of my needs with them instead. Most of the time I just set the lens to a desired aperture, and set the shutter to a desired speed, and let the camera adjust the ISO for exposure so all I concentrate on is the focusing. And with the stall of Nikon Primes and Zooms I just picked up a pristine Nikon FE (match needle full manual and aperture priority auto 60min-1/1000 sec) for under $60 and take advantage of 35mm film as well using the same lenses. The Nikon Lenses I have added to the stall are: 28mm f/2.5, 35mm f/2.8, 55mm f/2.8 Macro, 100mm f/2.8, 200mm f/4, 300mm f/4.5, 75-150mm f/3.5, 70-210 f/4. All these lenses cost me about the same as a single 23mm f/1.4 Fuji-X costs. As long as you stay away from the faster Nikon manual primes, and stay at f/2.8 and slower, prices are really cheap. I'm finding it no issue losing a single f-stop as the Fuji performs well at higher ISOs. So having a lot more fun minimizing my X primes and using the manual focus Nikons instead.
Whatever you decide....good luck and keep it fun!