Pete, I agree with your doctrinal statement except for your ‘kept saved forever’ statement. I believe scripture teaches us we CAN be kept saved forever, but just as God does not force himself on man to become saved, in the same manner, he does not force man to remain saved.
Paul writes to Timothy this;
1 Timothy 4:1 (KJV) Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;Man can choose to depart from the faith (which I see no other explanation other than they are/were saved) or choose to remain faithful. In summary, Scriptures teach us both eternal security (God keeps us so no outside entity can take our faith away) AND free will (we choose to accept and cling to Christ, and also to forsake and let him go). We are wise to understand both.