Reddit mentions of Marines ILBE Main Rucksack Back Pack

That's a tough call OP. I think personally, if it was me, I'd find a used Honda or Toyota SUV for around 1,200, and then spend 800 dollars on gear for living out of that vehicle, including gear to live in case that vehicle breaks down within the next year.

800 dollars on gear is actually plenty of money...I'll give you a rough list just as example:

1. Tent w/Rainfly - $76.00 - https://www.amazon.com/Mountainsmith-Lichen-Peak-Tent-1-Person/dp/B072J9LDFK/ref=sr_1_20?s=outdoor-recreation&ie=UTF8&qid=1549583739&sr=1-20&keywords=solo+tent&refinements=p_n_size_browse-bin%3A2204488011
   
2. Backpack - $170.00 - https://www.amazon.com/Marines-ILBE-Main-Rucksack-Back/dp/B00AFOQIR0/ref=sr_1_7?s=sporting-goods&ie=UTF8&qid=1549584289&sr=1-7&keywords=ilbe+backpack
   
3. Zero Degree 4-season Sleeping Bag - $175.00 - https://www.amazon.com/Kelty-Cosmic-Degree-Sleeping-Regular/dp/B014JQA5DC/ref=sr_1_18?s=sporting-goods&ie=UTF8&qid=1549584063&sr=1-18&keywords=zero%2Bdegree%2Bsleeping%2Bbag&th=1
   
4. Camoflauge Tarp - $10.00 - https://www.amazon.com/Stansport-T-810-C-Reinforced-Multi-Purpose-Woodland/dp/B000SKKHVY/ref=sr_1_2?s=sporting-goods&ie=UTF8&qid=1549583840&sr=1-2&keywords=camoflauge%2Btarp&th=1&psc=1
   
5. LED Healight - $12.00 - https://www.amazon.com/Energizer-6-LED-Industrial-Headlight/dp/B000MGGT66/ref=sr_1_9?s=sporting-goods&ie=UTF8&qid=1549583963&sr=1-9&keywords=energizer+LED+headlight
   
6. Leatherman Multi-Knife - $70.00 - https://www.amazon.com/LEATHERMAN-Knifeless-Multitool-Standard-Sheath/dp/B01EVJSN2W/ref=sr_1_2_sspa?s=sporting-goods&ie=UTF8&qid=1549584401&sr=1-2-spons&keywords=leatherman&psc=1&smid=A1XBRK5C7K9FB8
   
7. First Aid Kit - $12.00 - https://www.amazon.com/GO-Compact-First-Aid-Kit/dp/B015PJIVJM/ref=sr_1_7?s=sporting-goods&ie=UTF8&qid=1549584552&sr=1-7&keywords=camping+first+aid+kit
   
8. Paracord - $10.00 - https://www.amazon.com/BENGKU-Survival-Mil-SPEC-Parachute-MIl-C-5040-H/dp/B07226B3FJ/ref=sr_1_1_sspa?s=sporting-goods&ie=UTF8&qid=1549584610&sr=1-1-spons&keywords=paracord&psc=19)
   
9. Water Bottle - $11.00 - https://www.amazon.com/Nalgene-Wide-Mouth-Bottle-Clear/dp/B002WAPQSC/ref=sr_1_5?s=sporting-goods&ie=UTF8&qid=1549584733&sr=1-5&keywords=nalgene+water+bottle
   
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   I mean all of that is less than $550.00 in gear that you can use while being a trainhopper/hitchhiker, or living in a van or SUV. In fact, you'd probably be twice as prepared as most other tramps and vagabonds you meet on the road, in gear alone. Plus if you can still afford 1,450 for a used van or SUV in good condition?
   
   Also, keep in mind those prices are retail prices. Shop around at thrift stores, pawn shops, military surplus stores, ebay, and you'll easily cut those prices nearly in half. For example, that leatherman knife can be found at pretty much any pawn shop in America for around 30-35, bucks, easy.
   
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Marine ILBE pack

https://www.amazon.com/Marines-ILBE-Main-Rucksack-Back/dp/B00AFOQIR0

Best pack ever, can usually be had at a gun show for $80

Seriously, 10 flavors of tits.