For backpacking, the main advice is to keep the camera accessible rather than buried in your main pack, otherwise you’ll miss shots. A simple, affordable option is a top-loading camera bag worn separately or attached where you can reach it easily. That gives basic protection and is useful beyond this one trip.

For the tripod, most hiking packs have straps or loops that let you lash it to the side or front. A small tripod is easiest to carry this way; a flexible model can also be clipped or wrapped onto a strap.

If you want one bag to handle both hiking gear and camera gear, camera/backpacking hybrids exist. More premium examples were mentioned, but for a budget-conscious choice, a backpack with a dedicated lower camera compartment and an upper section for other items can work well.

In short: for the cheapest practical setup, use a small top-loader for the DSLR and strap the tripod to your hiking pack. If you prefer a single-bag solution, look for a camera backpack with separate camera and gear sections.