No, we don't.
UNLESS the Suns have a major injury, let's say to Nash. But if the Suns run out to a 55-60 win type season, no.
Just remember the Nuggets. Same situation we were in. Did nothing after a better closing rush than we had + their own first round loss to the Spurs, even effectively lost a guy like we did with Bonzi (Nene) and then just muddled through a disapppointing year this season. Big rushes rarely translate wholesale. Not never, but rarely. There's been a summer, the momentum is broken, and we are no better of a team today then we were on the last day of the season. Likely worse. Throw in an inexperienced coach who's never even been .500, let alone pushing 60 wins, and if the Suns put up that sort of win total we are strictly also rans.
P.S. As an aside God am I sick of the ridiculous "boxing out" excuse -- its one of the saddest lines of justification I have ever heard. Think it was started by a Reef homer no longer on this board, but good lord. Somehow Kenny apparently didn't get that memo and actually grabbed boards himself. Similarly somehow Kevin wasn't able to quite take as much advantage of all of that amazing blocking out going on as an OG, despite the fact the sad *** weenies up front were as bad as ever during his tenure. On a similar tact we also told Mike not to defend so he wouldn't get tired, and Brad not to defend the rim so he wouldn't get in foul trouble.