Cluster deployment architecture (2 replies)

Hi All,
i'm starting to use MySQL Cluster for a customer and I have a "simply" question.
In few words, I have 4 different hosts with the same characteristics (cpu, memory, disks) and i'm trying to figure out the best architecture.
For instance, in the cluster manager demo I saw:

box 1 and box 2
================
mysqld
ndb_mgmd

box 3
======
ndbd 1
ndbd 2

box 4
======
ndbd 3
ndbd 4


but for what I undestood nbdb (ndbmtd) is multi-threads and having more than one data node on the same multi-cores host is not optimal.
I like having all hosts running the same processes:

box 1, box 2, box 3, box 4
==========================
mysqld
ndb_mgmd
ndbmtd

Suggestions ? I know that the question is a bit over-simplified but I need some hints to start to thing about.

Thanks in advance
ste