Your print looks good! I get bored with long development times too, so I ALWAYS use warm developer (usually in the 25-35 C range). It's amazing how a few degrees of temperature can really speed up a process. That being said, I barely have any experience with the Arista Lith (I mostly use Moersch or LD20) so maybe others can chime in here. Of course, everything depends on what you are looking for in terms of colour, grittiness, and lithiness.
I'd also experiment going further than you plan -- after 60 seconds, a stop more exposure would be 120 seconds, then 240, etc. Similarly, try doing multiple (that is, two) prints at the same time in the developer, but snatch one later than the other. You might be surprised at what you like once drydown occurs.