In order to stay physically "accurate", a jump drive cannot create or destroy energy or momentum. This means the drive has the following limitations:
To comply with momentum conservation, your velocity and direction before a jump is the same as what you'll have afterwards. If you are in orbit on one planet, you better go to the right place in the orbit of another planet otherwise you won't be in orbit for long. This means you can either use normal rockets for maneuvering, or if you have the time (and jump-drive energy budget) then you can jump into a gravity well, let it accelerate you, and jump out again.
You have to consider gravitational potential energy before jumping. This means maneuvers in orbit can be performed cheaply (aka jumping in/out of combat), and but jumps to other planets are extremely expensive
I wrote a calculator to estimate jump energies. For the energy estimates I'll be assuming a 10 tonne spaceship, and that the gravitational potential energy difference comes from the jump drive (and thus has to be generated by a reactor on board the craft):
- To jump from LEO to lunar orbit takes 460GJ (150 tonnes of TNT, vaporize 292 tonnes of water). If it has a 1MW reactor, it'll take 127 hours to generate the 460GJ of energy.
- Jumping from Geostationary still takes 78GJ (18 tonnes TNT, vaporize 35 tonnes of water). A 1MW reactor would take 22 hours to charge for this jump
Why only a 1MW reactor? You still require hundreds of meters of radiators for a 1MW reactor! Batteries? A lithium ion chemistry battery is about a megajoule per kilogram. So you're looking at thousands of kilograms of batteries.
There's a nice map of gravity wells on XKCD:
Given that it takes hours for our reactor to jump a super lightweight spacecraft a couple pixels vertically, we can assume that a jump drive can travel approximately horizontally on this image. This means that a jump drive from the earth or moon can only take you to an orbit around Jupiter, into the middle of Saturn, or half-way to Venus.
So while jump drives may allow the type of space combat you're looking for, you also need to hand-wave a power source and heat-sink if you want to actually go anywhere.