IMO you're better off skipping the blood-clot and 4by4s.

A couple of field dressings, a couple tourniquets, maybe an airway if there is some present who can put one in, and 911 on speed dial. The priority is to keep the blood in, dirt out (as long as doing so doesn't slow down anything else), and transport are you're priorities.

Transport can be a bit of a trick. An EMT response and ambulance ride has advantages in that a good EMT has more options. And an ambulance arriving at an ER gets the fastest and most definitive response. Partly because stabilization and initial evaluation are done, partly because it is what the ER is used to, and partly because an EMT who works regularly with the ER is going to be more effective at communicating with the ER.

This can also speed response on the ER end of things because reporting by radio the EMTs can trigger the ER call list and crisis response protocols. This means that by the time the ambulance arrives the ER has a chance to have a trauma team (trauma surgeon, respiratory therapist, radiologist, etcetera) standing by.

On the other hand a lot depends on how fast EMTs can/will respond compared to how fast, and effectively, you can do the job. I've seen people bundled up and hauled off to the ER in the back of a truck in what seemed like two minutes compared to the rural FD response time north of twenty minutes. Good news is that someone got on the horn, this was before cell phones, and informed the ER, actually a full-on trauma center in this case, that they were coming and everything worked out swimmingly.