The obvious question is "Why on earth are you carrying two flashes, four lenses, two cameras, and a frikkin laptop with you every time you go out to shoot!?"
I have 11 lenses, 3 camera bodies, 3 flashes, and a laptop in my collection. How much do I carry to a shoot?
Usually either a single body with a lens on it, or MAYBE that + one other lens in my pocket or in a pouch on my belt (if so, it's usually one zoom that covers what I want to shoot, such as a 70-200 for portraits or a 24-105 for landscapes and environment + one prime that either complements the zoom or is redundant but with much faster aperture, if the zoom is slow). If I expect to need a flash, I just leave it on my camera until needed, with any radio remotes in my pocket.
Carrying 40 lbs of gear is not going to get you better photos.
WORST case scenario, if you're going to some event where you will have to shoot a huge variety of things without any time to go to your car or anything (like maybe a full service wedding package with everything from ring macro to getting ready to event to dancing, etc.), then mayyyybe it would be justifiable to have a small shoulder bag that holds 3 lenses or 2 and a body or so. Otherwise, bring the the gear that's going to get you the vast majority of the type of shot you're setting out to get for that trip, and nothing else.
This forces you to focus your mental energy on the shot you set out to take, minimizes distractions, speeds you up considerably (carrying less + side pouches, holsters, or shoulder bags are much easier to access than a backpack that you have to take off to access), makes you happier, lets you stay out for longer, and saves you $$ in chiropractic bills. All of which will = more fun and/or profits from your photography.