Server Utilities :: Datapump And Index Building

Currently we are using "exp and imp" utilities to unload from production and load into Dev server. While importing, we are following below steps

(1) Load only data [by specifying INDEXES=N in the par file]
(2) Unlock statistics
(3) Load indexes, other objects [by specifying ROWS=N]

After doing these steps, both data, indexes and others objects are loaded. To verify indexes, we are checking DBA_INDEXES.

DBA_INDEXES :
-------------
OWNER INDEX_NAME TABLE_NAME STATUS LAST_ANALYZED
----- ---------- ---------- ------ -------------
MYSCH CP_INDEX_1 CP_TABLE_1 VALID 14/JAN/12

Question :-

(1) Does imp utility rebuild the indexes while loading data ? or it simply takes the rows from dump and load into test system without building from scratch ?

(2) I am trying to replace 'exp' and 'imp' with datapump utilities ? But, I am confused about the parameters to be used ?

(a) Can I load both data and meta data at the same time (Using CONTENT=ALL option) ?
(b) I am planning to implement this in two steps :

first load only metadata using - CONTENT=METADATA_ONLY TABLE_EXISTS_ACTION=REPLACE

then, load data - CONTENT=DATA_ONLY.