Their web site does seem to indicate that speaking in tongues is a necessary evidence of salvation:
The Evidence of the Baptism in the Holy Spirit
The full consummation of the Baptism of believers in the Holy Spirit is evidenced by the initial physical
sign of speaking with other tongues as the Spirit gives utterance, and by the subsequent manifestation
of spiritual power in public testimony and service (Acts 2:4; 10:44-46; 19:2,6; 1:8)
For this reason, (in addition to the Total Prosperity ideas) , I would definitely steer clear of this church.
Not that they are not saved people, that cannot be fully determined. It depends if they are
relying on the fact that they are speaking in tongues to prove that they have trusted Christ or Do they
just trust Christ at His Word.
I personally do not believe in the charismaitc idea of "speaking in tongues". At least not the way I have heard most charasmatics describe it. But I also do not think it is a heaven or hell issue, unless (as I said above) they are relying on the fact they speak in tongues to prove that they are saved.
But even if they are saved, both of these beliefs (prosperity & tongues) I think can seriously hinder their spiritual growth. The bible is very clear on this that we each have different gifts. And although do believe there are blessings for those that are obedient, those blessings do not always equate to temporal prosperity as the world world see it.
Remember if we are obedient, we will follow Christ, but Christ said those that follow him will be persecuted just as He was. - Does not necessarily sound like Total Prosperity, now does it? At least not in this life, maybe in the life to come for those that rule and reign with Him.- if this is what they are referring to then I would agree with them, but based on what I have read on the website, I doubt that is what they are teaching.
But Definitely recommend to your friend to read the Bible for himself to determine if a pastor is preaching truth, because I am just a man and could be completely wrong. (But I do not think so, because if I thought I was wrong, I would think different than what I currently think, don't you think
)