For you, the best option now is the Vulture. Go to the usual A/D rated for combat build, with millitary armour and the best A rated shield. Go to Felicity Farseer (I assume that you modded your FSD there) and overcharge your Power Plant. You can have around 11% more power with the Grade 1 mod, plus something more with monstered special effect. Also mod the thrusters with Dirty Drive Tunning grade 3 with drag drives special effect. You can even mod (grade 1) some shield boosters.
After that, choose your weapons (depending of your style, you may use lasers and/or multicannons, or plasma accelerators, or frag cannons, it's your choice. Mod them if you have access to other engineers.
Most important: select your power priorities. That's why you had issues before. Your Vulture power plant is small, without the overcharged mod. You may use up to 5 priorities, but on most ships 3 are enough. Put FSD, fuel scoop and any other module that you don't need when you are in normal space, with hardpoints deployed, on priority 2. Disable or put to priority 3 cargo hatch.
Something like this:
https://coriolis.io/outfit/vulture?...BhAOEoUwIYHMA28QgIwV3fEQA==&bn=simple_vulture
After that, choose your weapons (depending of your style, you may use lasers and/or multicannons, or plasma accelerators, or frag cannons, it's your choice. Mod them if you have access to other engineers.
Most important: select your power priorities. That's why you had issues before. Your Vulture power plant is small, without the overcharged mod. You may use up to 5 priorities, but on most ships 3 are enough. Put FSD, fuel scoop and any other module that you don't need when you are in normal space, with hardpoints deployed, on priority 2. Disable or put to priority 3 cargo hatch.
Something like this:
https://coriolis.io/outfit/vulture?...BhAOEoUwIYHMA28QgIwV3fEQA==&bn=simple_vulture