need help! choosing right kit

[JAZZCNC]

Listen to Silyavski he's given you priceless advice about not Rushing and taking time to choose correct components wisely.!!

If you are going with R&P then forget nema23 and Also forget running Nema34 motors no matter the size with only 60Vdc.
Nema34 motors require much more voltage to get any decent speed from them. This is why they are often run with high power AC drives. Even 75Vdc is on the lower side.

You need to do some careful thinking regards ratios and components you'll use and the feeds and resolution you'll need for the type of work your wanting to do because this relation ship goes all the way thru the component selection and is very easy to get wrong when using R & P.

In general you need an excess of power to compensate for the inefficiency of R & P so if you get the selection wrong and don't have enough spare then it means running the machine at much reduced rate to compensate. This is often why people building with R&P are dissapointed and more often than not this is because of poor Ratio/Motor/Drive/PSU selection.
With 80KG + You NEED at least nema34 motors around 8nm and these need to be run with High power drives if you want the best from them.

Guessing and rushing not doing your home work will result in poor performance and wasted money I guarantee you this.!!

Such a large machine for first time project is a recipe for wasting money and dissapointment so LISTEN CAREFULLY to what is being advised and SLOW DOWN.