You've got side stretchers running between tapered legs (so angled mortice and tenons with angled shoulders), and then a long stretcher running between them which also joins at an angle (so more of the same).
I guess it depends how experienced and how fussy you are, but if you're looking for professional gap free joinery, then you'll need to be a fairly experienced furniture maker to get this one right. You can't assemble "by the numbers" and expect it all to pull up tight, inevitably thin legs move slightly, so that long stretcher will definitely need individual fitting, and you'll probably have to scribe several of the other tenon shoulders as well. The other hurdle you'll have to overcome is cramping it all up. It's certainly do-able, but with angles it's never as simple as slapping on a couple of Besseys.
Here's an illustration of some of the practical problems you'll face. This is a stool that's a standard item for apprentices at the Barnsley Workshop (so these are guys who have already completed two or three years of City & Guilds training, plus most of them have also worked as cabinet makers). Okay, it's got the added complexity of wedged through tenons, but believe me, everyone struggles on this project. The stretcher at the bottom is similar to the stretcher you're planning, but fitting it with absolute precision is a technical process involving hand planing an MDF template to fix the dimensions and angles. You can't just lift the measurements straight from the rod or plan and expect a really good fit. Cabinet makers use a phrase, "going from the paper to the wood" to describe the moment where you have to progressively leave the plan dimensions behind and be guided instead by the item that's on the bench in front of you. To make your design really well will require going several steps beyond the paper!
And once you've completed all your joinery you then have to plan the glue-up. As soon as angled components enter the equation the cramping challenge gets a bit more complex,
By all means give it a go, but there's every chance the results will be disappointing and that you'll end up disheartened.
If you're fairly new to all this I'd suggest you design something where all the joinery is at 90 degrees. You can still have tapered legs, just commence the taper
below the level of the lowest joinery. In fact even with slender legs you don't really need stretchers on a console table, they never have to support any real weight. If you're a bit more experienced and determined to push yourself, then you can even have straight through tapers plus angled legs, just restrict the joinery to the apron rails at the top and forget about stretchers.
One last point, don't drop below 32mm x 32mm for your legs, you can
taper much smaller than this, but you'll need that meat at the top of the leg to joint the aprons rails in. Go smaller and you're looking at joinery solutions like interlaced stub tenons, which is no way to begin your furniture making career!
Have a read through this article, I don't agree with everything he says, but there's some good stuff in there and modifying the dimensions will take you to a relatively straightforward console table.
http://www.popularwoodworking.com/wp-co ... 4-Seg2.pdf
Good luck!