They aren't stuffed into some 727 or MD-88.
A Boeing 777 is one of the most technologically advanced commercial passenger aircraft flying. Here's a pic of typical business class seating:
And it's huge, i'ts not like the team would have to sit crammed in next to each other. They could easily sit with a seat or two between each person.
Short of Hunt actually buying a 777 and having a custom interior put in, you can't really have it any better.
And before anyone starts with the idea of Clark buying such an aircraft, they start at about $250,000,000,
before you start customizing it. Or they did before COVID. might need to tack another 25-35% or more onto that these days. Then whatever it costs to put in 1st-class type seating throughout. 10-20 million there? Then what it costs to operate, which would be, well probably $250,000 per flight? Thing burns like 3200 gallons of fuel per hour in cruise. Without breaking out a calculator, that's around $12000/hr just in fuel burn. Plus, pilots, attendants, insurance, maintenance, etc.