One thing to keep in mind is that the player is inexperienced. The cleric is (IMHO) not a good class choice for an inexperienced player due to the fairly large spell list they have. But, since it sounds like this decision has already been made, I'd probably opt for keeping some of the choices simple rather than going for the most powerful combinations one can find (which often adds complexity which confuses inexperienced players).
To that end: I'd skip metamagic feats completely. Likewise skip over the divine feats as well. Yes, this is a suboptimal build power-wise, but for an inexperienced player, he/she will do better.
Full plate and a light shield. Maybe spend a feat for a nastier weapon (such as the dwarven waraxe). For a newer player this may allow him/her to kick butt more easily. Make them magic, with simple pluses and avoid the flaming/shocking/other special ability stuff. Straightforward = good.
Feats: Combat casting (make absolutely sure you explain what it means to cast on the defensive). Clerics tend to cast on the defensive more than most other characters that I've seen. If you're going to explain one more complex subject, this is the one to do.
Pick some other simple feats. Extra Turning, Improved Turning, Weapon Focus, Lightning Reflexes all come to mind. If you happen to have Races of Stone, consider the heavy armor optimization feats, the dwarven armor proficiency feat (upgrade the armor to battle plate in this case). The shield feats in PHBII might be good choices as well (forgetting the name, but one increases the bonus for the shield).
If you've got any leftover cash for gear, go for ability boost items or sutff that increases AC. Again, straightforward.
Skip any prestige classes and just go straight cleric.
Spells are another issue entirely. I've seen the cleric spell list overwhelm experienced players taking the cleric up for the first time, much less an inexperienced one. I suggest giving the player a list with some good picks initially. And have him/her swap spells typically taken after playing it a few times.