If you're sticking with 33's then go with a stock height suspension replacement. If the tires rub at all (they shouldn't) or you want just a little more fender clearance for looks consider a 1" body lift.
That said I would still do sliders first. Also living in the PNW I can say there are plenty of tails and fire roads that a mostly stock rig will get you down but you absolutely will drag the running boards over logs, large dirt mounds and some rocks. You will be having a really bad day when you rip off one of those running boards, or crush one, and damage your rocker panel. If you still want the step functionality get a set of flat sliders vs the ones that are tucked up. I built mine flat and never get hung up on them even when attacking the rocks in Moab.
After slider address suspension.
Next I would do the rear bumper. All of the wheeling I have done has shown me you are far more likely to hit your rear bumper on things than the front. I have a swing out but it's definitely in the way a lot. I am running 35's though, and remember dragging that under mount spare all the time, so it's worth the pain of opening it every time to me.
Last would be front bumper for me.
That said I would still do sliders first. Also living in the PNW I can say there are plenty of tails and fire roads that a mostly stock rig will get you down but you absolutely will drag the running boards over logs, large dirt mounds and some rocks. You will be having a really bad day when you rip off one of those running boards, or crush one, and damage your rocker panel. If you still want the step functionality get a set of flat sliders vs the ones that are tucked up. I built mine flat and never get hung up on them even when attacking the rocks in Moab.
After slider address suspension.
Next I would do the rear bumper. All of the wheeling I have done has shown me you are far more likely to hit your rear bumper on things than the front. I have a swing out but it's definitely in the way a lot. I am running 35's though, and remember dragging that under mount spare all the time, so it's worth the pain of opening it every time to me.
Last would be front bumper for me.