Scanning from slides is an art all its own. You'll get far better prints using a digital workflow starting with a scan than you'd ever get using traditional darkroom techniques.
I've been through 3 generations of dedicated slide/film scanners, and unfortunately the rise of digital and collapse of film sales has killed the market so no new (high quality) film scanners are likely to be forthcoming. Medium format slides have so much information you'll get great results with almost any decent flatbed scanner that includes a transmitted light/transparency scan option.
I'm using a Minolta 5400 scanner for my 35 mm slides, and it's excellent if you can find one used. Be aware that while Sony picked up Minolta's camera side, and will provide repair services for the hardware, they no longer support it so the software in the box no longer works with newer operating systems and will never be updated. I'm using Vuescan from Hamrix, which works fine. Silverfast is another pricier option.
Once you climb the learning curve and work in earnest, it'll take you about an hour per scan if you want to squeeze every last drop of image quality out of a 35 mm slide. If the original is a very high quality low ISO film like Velvia or Provia 100F, and an excellent sharp exposure, you can print up to 20 x 30" no problem, though grain will be visible. I've printed a few up to 24 x 36", and this can look surprisingly good if it's a busy image like a forest scene, but blue skies will look very gritty due to the film's grain. If you're a Photoshop guru you can blur that out nicely, but now you're talking serious time in front of the computer.